swift - label 的font 设置 文字字体和大小

设置字体和颜色

        lab.textColor = UIColor.init(hexColor: "795928")
        lab.font = UIFont.systemFont(ofSize: 32, weight: UIFont.Weight.black)

　　

设置html 导图颜色

extension UIColor {

    /// 用十六进制颜色创建UIColor
    ///
    /// - Parameter hexColor: 十六进制颜色 (0F0F0F)
    convenience init(hexColor: String) {

        // 存储转换后的数值
        var red:UInt32 = 0, green:UInt32 = 0, blue:UInt32 = 0

        // 分别转换进行转换
        Scanner(string: hexColor[0..<2]).scanHexInt32(&red)

        Scanner(string: hexColor[2..<4]).scanHexInt32(&green)

        Scanner(string: hexColor[4..<6]).scanHexInt32(&blue)

        self.init(red: CGFloat(red)/255.0, green: CGFloat(green)/255.0, blue: CGFloat(blue)/255.0, alpha: 1.0)
    }
    convenience init(hexColor: String, alpha: CGFloat) {

        // 存储转换后的数值
        var red:UInt32 = 0, green:UInt32 = 0, blue:UInt32 = 0

        // 分别转换进行转换
        Scanner(string: hexColor[0..<2]).scanHexInt32(&red)

        Scanner(string: hexColor[2..<4]).scanHexInt32(&green)

        Scanner(string: hexColor[4..<6]).scanHexInt32(&blue)

        self.init(red: CGFloat(red)/255.0, green: CGFloat(green)/255.0, blue: CGFloat(blue)/255.0, alpha: alpha)
    }
}

　　

    /// 初始化:十六进制颜色
    ///
    /// - Parameter hexString: 十六进制颜色字符串(1:有#,2:没有#,3:含有0X)
    convenience init(hexString: String, alpha: CGFloat = 1.0) {
        var cstr = hexString.trimmingCharacters(in:  CharacterSet.whitespacesAndNewlines).uppercased() as NSString
        if(cstr.length < 6){
            self.init(red: 0, green: 0, blue: 0, alpha: 0)
            return
        }
        if(cstr.hasPrefix("0X")){
            cstr = cstr.substring(from: 2) as NSString
        }
        if(cstr.hasPrefix("#")){
            cstr = cstr.substring(from: 1) as NSString
        }
        if(cstr.length != 6){
            self.init(red: 0, green: 0, blue: 0, alpha: 0)
            return
        }
        var range = NSRange.init()
        range.location = 0
        range.length = 2
        let rStr = cstr.substring(with: range)
        range.location = 2
        let gStr = cstr.substring(with: range)
        range.location = 4
        let bStr = cstr.substring(with: range)
        var r :UInt32 = 0x0
        var g :UInt32 = 0x0
        var b :UInt32 = 0x0
        Scanner.init(string: rStr).scanHexInt32(&r)
        Scanner.init(string: gStr).scanHexInt32(&g)
        Scanner.init(string: bStr).scanHexInt32(&b)
        self.init(red: CGFloat(r)/255.0, green: CGFloat(g)/255.0, blue: CGFloat(b)/255.0, alpha: alpha)
    }